Triangulation of a Perseid Meteor using the Zeiss Plate Measuring Machine


Report Sheets Here is an Example of one filled out, if you have a windows mobile phone then you can also use the meteor observing software here

Members Report for 2013

Kevin Smith

What is astonishing about this image is that in 8 seconds Kevin has also captured the Milkyway which in his neck of the woods is washed out with light pollution using a humber DSLR

Click on the image for a full size image (2Mb)

Simon Dawes

Left my automated radio meteor observations to do the work and checked up later in August :-)
Like last year the morning of the 12th showed the most meteors.

This was the highest duration meteor captured on the 12th August 2013 at 11:38:18 it lasted for 338 counts which looking at the trace is about a minute.


Members Report for 2012

Simon Dawes

On holiday in Austria, clouded out, however my automated radio meteor observations continued to run 24hrs per day while I was away, this year was more successful than last, primarily due to the the Yagi now being mounted on a mast.
Frequency 143.049 MHz
Equipment 4 Element Yagi, Yupiteru MVT7100, Spectrum Lab
ColourGram of total Meteor durations, hours are down the page days across the page, represents all of August 2012

Waterfall diagram from Spectrum Lab showing some of the Perseid meteors

Looking at the waterfall traces my system automatically saves there was a significant number of large long duration traces during the Perseids. For those not familiar with waterfall diagrams, time is on the vertical axis (present at the top past at the bottom) and frequency on the horizontal axis, the colour represents the signal strength at that frequency. a 'wide' plot indicates a dopler-shift of the radar (GRAVES) that I am monitoring which is normally not 'visible' from my location. The thin vertical line is noise (a real pain in the ....) The meteor in the middle of the trace at 04:58 and 09s is a more usual meteor, very short duration (in this case 4 clock counts) but yo can see the other meteors last much longer (the ionisation path reflecting the radar lasts longer in the atmosphere) More information on radio observation of meteors and a full description of the software is available on the radio pages of this site. .
Analysing the meteor durations and putting into bins it was able to show a much sharper peak when only meteors greater than 8 counts were included

Members Report for 2011

This year was a challenging year for observing, the moon was full and most of the country was cloudy.

Simon Dawes

Clouded out for visual observations on holiday on Guernsey but my automated radio meteor logging station in Bexleyheath, Kent, England, did observe the perseids, the peak was between 08:00 - 09:00 UT on the 13th
Experimental automated meteor observing set-up
Frequency 143.049 MHz
Equipment 4 Element Yagi, Yupiteru MVT7100, Spectrum Lab
This plot is called a Colourgram, it plots time of day against day of month the figures are the number of meteors observed.
This is the same data as above but plotted at a 3D surface plotthe Perseid peak is obvious.
This is a plot of all the data captured, binned into hour long buckets.
Sound of a Perseid fireball

This plot shows a waterfall diagram of the fireball, the signal was received for 12.2s! frequency is plotted horizontally and time vertically with the top of the chart being the present and the bottom of the chart representing the 2 minutes earlier
This shows the signal strength, noise and trigger level, the trigger level is continiously adjusted to be 17dB above the noise.

Members reports for 2010

Roger Pickard

I observed on the 12th from 22.15 to 22.45 UT and saw 6 Perseids plus one sporadic. The sky was wonderfully clear and so variables won the day (or should I say night?).

Kevin Smith

I was out from about ten to eleven until just after midnight (BST) (2010-08-12 to13). Visually, I thought the best one of the night was at 12.02(BST), about mag 1, low in the east parallel with the ground and heading straight for Jupiter. I also made a note: '11.36 Anomaly, single point flash at zenith.' Anyone else see that? Perhaps it was Iridium, looked just like an aircraft, but only flashed once

Julian Tworek

Image not processed 5min exposure on astro track, canon 7D 10 to 20mm sigma lens. Taken at Stonebarrow near Charmouth

Simon Dawes

The 12th was cloudy where I was in Cornwall but I saw 6 in 45 mins on the 13th and one sporadic - 4 faint meteors caught on camera (only one is a perseid) Full visual report to BAA here Perseids2010SD.pdf full photographic report to the BAA here Perseids2010photographicSD.pdf.
The photographic meteors were very faint so I haven't included in this report but have created a cartoon showing their positions.

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CMHASD - Perseids